2.Preparation and Characterization of Polyclonal Antibody Against Xenopus PAPC
Ruiying HU ; Peng XU ; Yuelei CHEN ; Xin LOU ; Xiaoyan DING
Progress in Biochemistry and Biophysics 2007;34(2):222-228
Xenopus Paraxial Protocadherin (PAPC), which was initially identified in a screen for genes present in the Spemann organizer of Xenopus embryos, is required for gastrulation, somitogenesis and otic vesicle formation. In order to investigate its function in various developmental events, an antibody was prepared which could specifically recognize Xenopus PAPC. Glutathione S transferase (GST) expression system was used to express the fusion protein GST-PAPC. Rabbits were immunized with GST-PAPC Western blotting analysis of FL-PAPC transfected HEK 293T cells lysates, which could be specifically blocked by pre-adsorption of prokaryotic expressed GST-PAPC fusion protein. Furthermore, by using immunofluorescence analysis the polyclonal antibody recognized membrane-bound PAPC in FL-PAPC transfected 293T cells and Xenopus animal cap cells. By Western blotting analysis,the endogenous 150 ku PAPC protein was detected in Xenopus embryos using the anti-PAPC antibody. Take together it could be concluded that a polyclonal antibody specifically against Xenopus PAPC was developed.
3.Correlation between thrombomodulin and atherosclerosis in chronic kidney diseases patients
Zhongxin LI ; Xiangdong CHEN ; Juan MENG ; Xin ZHANG ; Liren PENG
Chinese Journal of Nephrology 2011;27(8):581-584
Objective Todeterminethecorrelationbetweenthrombomodulinand atherosclerosis in chronic kidney diseases (CKD) patients.Methods A total of 96 CKD patients in our hospital were enrolled in the study, including 32 maintenance hemodialysis(MHD) patients and 64 non-hemodialysis CKD patients with stage 2 to 5(non-HD) and 30 age- and gendermatched healthy volunteers were used as control.Intima-media thickness(IMT) and atherosclerotic plaquesof theextracranialcommoncarotidarteryweredetectedbyhigh-resolutionB-mode ultrasonography. Bloodlevelof thrombomodulinwasmeasuredusingELISA,andcreatinine,triglycerides, cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol were measured routinely as well.Correlation analysis of thrombomodulin with other parameters was performed.Results The thrombomodulin level was significantly higher in CKD patients as compared to healthy controls[(12.15±3.04) mg/L vs(3.12±0.23) mg/L, P<0.05], and also significantly higher in MHD patients as compared to non-HD patients [(16.89±3.35) mg/L vs (9.78±2.49) mg/L, P<0.05].The atherosclerotic plaques incidence and IMT value of carotid artery increased significantly in CKD patients compared with healthy volunteers.Thrombomodulin was positively correlated with IMT in CKD patients(r=0.335, P<0.01).Multiple stepwise regression analysis showed that thrombomodulin, Tm (OR=1.13, 95%CI 1.010-1.121), SBP (OR=1.09, 95%GI 1.009-1.114), CRP(OR=1.22, 95%CI 1.216-2.007), and Scr were independent risk factors of IMT.ConclusionThrombomodulin is correlated with carotid atherosclerosis in CKD patients and may be used as a marker to evaluate the endothelial damage.
4.Clinical Value and Detection of Myocardial Bridge by Multi-slice Spiral CT Coronary Angiography
Libo PANG ; Liuquan CHEN ; Xihai ZHAO ; Haibo YAN ; Peng XIN
Journal of Practical Radiology 2001;0(07):-
Objective To explore the characteristic and clinical meaning of myocardial bridge in patients with multi-slice spiral CT(MSCT) coronary angiography.Methods 875 patients with suspected or diagnosed coronary artery disease were studied with MSCT coronary angiography,579 cases were male and 296 cases were female,ranged from 30~87 years old in age with average of 60 years old.The heart was scanned with retrospectively ECG-gated,reconstruction from phase for all original tomographic source images at 30%~40% R-R phase interval according to heart rate ≥75 bpm and at 40%~50% R-R phase interval according to heart rate ≤75 bpm.The images of maximum intensity projection,multiplanar reconstruction and vulume reconstruction were gained to show left and right main coronary artery and their main branchs on mulliple angle.Results The myocardial bridges were detected in 89 cases,the positive rate was 10.2%,36 cases(40.5%)had different grade stenosis(≤50%).The myocardial bridges located at middle segment of anterior descending artery(79.8%),the thickness of myocardial bridge was 0.06~0.55 cm,the atherosclerosis plaques were found in 20 cases,the vascular stenosis was approximate to 50%.39 cases with simple myocardial bridges had angina,21 cases hadn’t angina.23 cases with myocardial bridges accompanied by coronary artery atherosclerosis had angina.Conclusion MSCT coronary angiography may clearly detect the myocardial bridge,which can provide more worthy information for clinical diagnosis and treatment.
5.Evaluation of the early outcomes of mini-open lumbar microdiscectomy
Xin-Sheng PENG ; Li-Yan CHEN ; Fo-Bao LI ;
Chinese Journal of Microsurgery 2006;0(06):-
Objective To evaluate the early outcomes of mini-open lumbar microdiscectomy. Methods There were 38 cases in each group of mini-open lumbar mierodiscectomy and conventional discecto- my.Operating time,blood loss,time of leaving the bed and length of hospital stay were compared in two groups.MacNab criteria were used to evaluate the outcomes.Results To compare the conventional discec- tomy group,microdiscectomy group spent similar operating time,but had less blood loss(P
6.Auxiliary partial orthotopic liver transplantation in mice
Qi CHENG ; Dan GAO ; Xin LONG ; Xiaoping CHEN ; Peng ZHU
Chinese Journal of Organ Transplantation 2014;35(9):552-554
Objective To explore the technique of auxiliary partial orthotopic liver transplantation model in C57BL/6 mice.Method The donor portal vein and hepatic vein were anastomosed with Cuff and suture techniques respectively.The donor bile duct was implanted into recipient duodenum.Result The operation time of harvesting donor's liver and anhepatic phase and recipient was (30 ± 3),(6-± 1) and (58 ± 5) min respectively.The model success rate was 96%,and the 4-week survival rate was 88%.Conclusion The animal model was stable with high success-rate and can be used for the study of auxiliary partial orthotopic liver transplantation.
7.National Comprehensive Cancer Network, Americal Society of Clinical Oncology and Oncology Nursing Society in the guide nursing enlightenment to our country related content
Xin PENG ; Qu WEN ; Xiaomeng LI ; Fan LIANG ; Wei CHEN
Chinese Journal of Practical Nursing 2015;31(14):1076-1079
We aimed to make comprehensive cancer care guidelines of China according to American guidelines of National Comprehensive Cancer Network,Ametican Society of Clinical Oncology and Oncology Nursing Society,and to guide clinical nurses to study and draw lessons from foreign latest guidelines,and combined with the actual situation in our country.The results of study and application were advantageous to the nursing profession,the security and interests of the patients.We should develop comprehensive cancer care guidelines of our country,eventually make nursing practice guide system of China constantly improve and perfect.
8.Study on prediction of involvement in facial nerve in the patients with parotid tumors by using facial electroneurography
Min GAO ; Yan CHEN ; Yanfeng KANG ; Xin PENG ; Guangyan YU
Journal of Peking University(Health Sciences) 2015;(1):57-61
Objective:To investigate the possibility of predicting facial nerve involvement in the pa-tients with parotid tumors using facial electroneurography (ENoG).Methods:In the study, 53 patients with primary parotid tumors were included in the study , 28 were benign tumors and 25 were malignant . There was no significant difference of tumor locations and sizes between the two groups . House-Brackmann facial nerve function evaluation was gradeⅠin all the patients who received examination of fa-cial electroneurography , including stimulation strength , amplitude , and latent time bilaterally .The facial electroneurography results in the affected side were compared with the results of contralateral normal side , intraoperative appearance and postoperative histopathological diagnosis .The facial electroneurography results were analyzed by Wilcoxon signed rank test and receiver operator characteristic ( ROC) curve. Results:During the facial electroneurography examination , the mean stimulation strength in the patients with benign parotid tumor was 20.0 mA.There was significant decrease in the amplitude at the affected side compared with the normal side upon posterior auricular stimulation ( P<0 .05 ) .But there was no significant difference in the latent time between the bilateral sides (P>0.05).However, in the patients with malignant parotid tumor , the mean stimulation strength was higher at 24.5 mA.There was signifi-cant decrease in the amplitude or even no response at the affected side compared to the normal side upon posterior auricular stimulation ( P<0 .05 ) .No response was detected in the multiple branches of facial nerve of affected sides in 36 .0%patients upon posterior auricular stimulation .The amplitude of branchesⅢand Ⅳwas significantly lower at the affected side than that at the normal side upon anterior auricular stimulation (P<0.05).The area under the ROC curve for ENoG was 0.884.Conclusion: When the facial nerve was involved by the parotid tumors , the stimulation strength in the electroneurography was larger .There was significant difference in the amplitude and the latent time of the facial nerve between the affected side and the normal side upon the posterior auricular stimulation .The rate of absence of reac-tion wave was higher in the patients with malignant tumors .It was feasible to predict the facial nerve in-volvement by ENoG for the parotid gland tumor patients without clinical appearances of facial paralysis .
9.Effect of telephone follow-up on compliance and Helicobacter pylori eradication in patients with Helicobacter pylori infection
Xin PENG ; Lixiu SONG ; Weigang CHEN ; Yong ZHENG
Journal of Central South University(Medical Sciences) 2017;42(3):308-312
Objective:To evaluate effect of telephone follow-up combined with written instruction on compliance and Helicobacterpylori (H.pylori) eradication in patients with H.pylori infection.Methods:A total of 160 H.pylori positive patients were randomly divided into an experimental group and a control group (n=80 in each group).Ml the patients got the guide instruction named the guidance of clinical medication for H.pylori infection patients before the treatment.The patients in the experimental group were added individualized follow-up with telephone.The compliance,eradication ofH.pylori,adverse events,and satisfaction were compared between the 2 groups.Results:The eradication rate of H.pylori in the perprotocol analysis for the experimental group and control group were 64.4% (47/73) and 56.5%(35/62),respectively (P=0.380),while in the intention-to-treat analysis,the rates were 58.8% (47/80) and 43.8% (35/80,P=0.082),respectively.The compliance rate in the experimental group was significantly higher than that in the control group (91.3% vs 77.5%,P<0.05).There was significant difference in patients' satisfaction in good ones (75.3% vs 51.6%) and poor ones (5.5% vs 21.0%) between the 2 groups (P<0.05).There were 11 patients in the experimental group and 36 patients in the control group,who appeared adverse reactions such as nausea,bad breath,abdominal distention,poor appetite,and defecation habit change during the process of eradicating H.pylori,but the occurrence rate in the experimental group was obviously lower than that in the control group (15.1% vs 58.1%,P<0.05).Conclusion:The telephone follow-up cannot increase the H.pylori eradication rate,but it can improve compliance and satisfaction for the patients and relieve adverse effects.
10.Clinical curative effect of ipratropium bromide in combination with ambroxol hydrochoride on ventilator-associated pneumonia in elderly patients
Yimei LIU ; Junyi WANG ; Yuan CHEN ; Xin LI ; Peng LYU ; Peng ZHANG
Chinese Journal of Geriatrics 2015;34(8):866-868
Objective To investigate the clinical curative effect of ipratropium bromide in combination with ambroxol hydrochloride (mucosolvan) on ventilator-associated pneumonia (VAP) in elderly patients.Methods From Jan 2013 to Nov 2014,a total of 46 elderly patients with VAP in our hospital were treated with ipratropium bromide 0.5 mg diluted in 5 ml saline by inhalation with ventilator,and mucosolvan 30 mg by intravenous injection,3 times/d (treatment group,n=23),and treated with ipratropium bromide 0.5 mg diluted in 5 ml saline by inhalation with ventilator,3 times/d (control group,n=23).Total clinical effective rate,ventilating time,number of sputum suction by fibre bronchoscope and white cell count were compared between the two groups.Results The total clinical effective rate was higher in treatment group than in the control group [91 % (21/23) vs.74%(17/23),x2=11.310,P=0.002].The indicators of ventilating time,number of sputum suction by fibre bronchoscope and white cell count were improved in treatment group as compared with control group [(8.2±1.5) d vs.(13.7±3.1) d,(3.5±0.3) vs.(6.7±1.2),(9.5±2.3) × 109/L vs.(14.2±2.7) × 109/L,t=17.510,2.750,3.810,respectively,P=0.000,0.001,0.001].Conclusions Compared with single-drug treatment,ipratropium bromide in combination with ambroxol hydrochloride (mucosolvan) could improve airway humidification,promote cilium to clean secreta,shorten the ventilating time and increase the curative rate of YAP in elderly patients.